The new digital system that uses the FM subcarrier for transmission of digital radio. aacPlus is used as coding standard. And you can plug the system into transmitters that have SCA inputs (For RDS, DARC). No new transmitters, just "plug-and-play".
GlobeCast is the largest US-based value-added provider of transmission services for video, audio and broadcast data applications. GlobeCast provides unique, customized services for origination, backhaul, contribution and distribution to over 1,000 domestic and international news, sports, entertainment, network, and business television clients.